[related]Hearing the words 'Harry Styles' and 'proposal' in the same sentence this morning must have set countless of One Direction fans' hearts aflutter.

But Directioners need not worry - Harry's still young, free and single.

He did prove himself a right old romantic, though, when he help a fan to propose to his girlfriend on Wednesday night.

All together now - ahhhh…

Harry's lovely gesture happened after fan Bradley Chisenhall tweeted the boys asking if they would help him to pop the question at their gig in Atlanta, Georgia.

Help me propose to my girlfriend tomorrow night at the show. @Harry_Styles @Real_Liam_Payne @NiallOfficial @zayncomecu @Louis_Tomlinson

— Bradley Chisenhall (@ChisenhallAL) October 1, 2014

Considering the amount of retweets, it seems impossible that Bradley's lady wouldn't have spotted the tweet and ruined the surprise, but whatever…

Eagle-eyed fans noticed that Harry had followed Bradley, so presumably the pair concocted a plan over private message. And during a break between songs, Harry told the crowd: “I have a friend in the audience tonight. He’s called Bradley…”

As the cameras turned on Bradley, he bent down on one knee and proposed to girlfriend Christine soundtracked by the screaming of thousands of teenage girls.

Sweet, eh?

Christine looked delighted, and said "yes". The couple later popped backstage to pose for a picture with their mega-famous matchmaker.

Thank u @Harry_Styles for making this all happen for me& @Christinekozlo &also making my sisters @Shelbymmorgann nite pic.twitter.com/UyeIMrn2y9

— Bradley Chisenhall (@ChisenhallAL) October 2, 2014

Harry, meanwhile, could be about to find love of his own, if rumours about Katy Perry's huge crush on him are true…